The following information shows the result of the orbit fit based on Gary Bernstein's method. Most of the information should be self-explanatory. Take special note that while the original Bernstein software works with barycentric coordinates, we convert these results into a heliocentric coordinate system.
# Object: 03WA191 # Created Sun Dec 22 02:08:34 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 27 observations of 27 # Arc: 19.24y # First observation: 2003/11/23 # Last observation: 2023/02/20 # Chi-squared of fit: 75.96 DOF: 48 RMS: 0.30 # Min/Max residuals: -0.80 1.51 # Exact a, adot, b, bdot, g, gdot: 1.813265E-05 4.328306E-02 2.477232E-06 -1.685201E-03 3.418256E-02 1.970645E-03 # Covariance matrix: 1.5515E-13 -3.7318E-14 -1.6499E-15 1.1712E-15 -2.6839E-14 -3.2364E-14 -3.7318E-14 1.8380E-14 9.8471E-16 -6.7519E-16 1.3192E-14 1.8835E-14 -1.6499E-15 9.8471E-16 1.0282E-13 -7.2130E-15 -1.6450E-15 1.2653E-15 1.1712E-15 -6.7519E-16 -7.2130E-15 1.0388E-15 -4.8577E-16 -7.3444E-16 -2.6839E-14 1.3192E-14 -1.6450E-15 -4.8577E-16 1.6954E-13 1.1438E-15 -3.2364E-14 1.8835E-14 1.2653E-15 -7.3444E-16 1.1438E-15 2.1511E-14 # lat0 lon0 xBary yBary zBary JD0 -4.061222 59.551128 -0.011795 -0.069813 -0.984013 2452966.767343 # Heliocentric elements and errors Epoch: 2452966.5000 = 2003/11/23 Mean Anomaly: 7.90986 +/- 0.001 Argument of Peri: 227.21505 +/- 0.002 Long of Asc Node: 179.29577 +/- 0.001 Inclination: 4.52099 +/- 0.000 Eccentricity: 0.23672918 +/- 0.0000 Semi-Major Axis: 39.41985638 +/- 0.0027 Time of Perihelion: 2450980.2352 +/- 0.4 Perihelion: 30.08802601 +/- 0.0026 Aphelion: 48.75168674 +/- 0.0037 Period (y) 247.5032 +/- 0.03 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 15.27418875 +/- 0.0002 Ecliptic Y 26.01636407 +/- 0.0003 Ecliptic Z -2.07181131 +/- 0.0000 Ecliptic XDOT -0.00291816 +/- 0.0000 Ecliptic YDOT 0.00187816 +/- 0.0000 Ecliptic ZDOT -0.00014566 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 30.23975692 +/- 0.0003 Geocenter to KBO 29.25469786 +/- 0.0004 # Hcoef: 8.25
The following table shows the complete astrometric record for 03WA191. The first three columns show the date of observation. The next six columns are RA and DEC. The next column (when provided) is the observed magnitude and filter. The next column is the object name (03WA191) followed by the observatory code and reference code for the source of the astrometry.
2003 11 23.26660 03 53 01.93 +16 05 09.0 21.9R 03WA191 695 Cl9848 2003 11 23.32141 03 53 01.51 +16 05 08.4 03WA191 695 Cl9848 2003 11 23.37612 03 53 01.14 +16 05 07.3 03WA191 695 Cl9848 2004 03 15.12720 03 49 09.24 +16 02 44.5 22.5R 03WA191 695 Cl9848 2004 03 15.17369 03 49 09.46 +16 02 45.6 03WA191 695 Cl9848 2004 11 09.43540 04 04 38.42 +16 34 14.4 21.7R 03WA191 695 Cl9848 2004 11 10.38137 04 04 32.38 +16 33 54.3 03WA191 695 Cl9848 2004 11 10.45652 04 04 31.88 +16 33 52.8 03WA191 695 Cl9848 2004 12 04.37762 04 01 53.59 +16 25 56.2 22.5R 03WA191 688 Cm1170 2004 12 04.45015 04 01 53.22 +16 25 53.9 03WA191 688 Cm1170 2005 10 27.51902 04 16 05.68 +17 00 48.5 27.6R 03WA191 568 Cp2052 2005 10 27.59415 04 16 05.24 +17 00 47.3 03WA191 568 Cp2052 2005 11 02.31012 04 15 32.78 +16 58 56.0 21.7R 03WA191 695 Cp0704 2005 11 02.36791 04 15 32.44 +16 58 55.1 03WA191 695 Cp0704 2005 11 02.42396 04 15 32.10 +16 58 53.9 03WA191 695 Cp0704 2008 11 13.19958 04 44 42.33 +17 50 15.6 03WA191 250 S~06Ag 2008 11 13.21138 04 44 42.26 +17 50 15.5 03WA191 250 S~06Ag 2008 11 13.21763 04 44 42.22 +17 50 15.4 03WA191 250 S~06Ag 2008 11 13.22458 04 44 42.17 +17 50 15.3 03WA191 250 S~06Ag 2015 02 18.13321 05 35 08.14 +18 44 21.0 21.7R 03WA191 695 C~1M69 2015 02 18.17916 05 35 08.04 +18 44 21.3 03WA191 695 C~1M69 2015 02 18.22658 05 35 07.93 +18 44 21.5 03WA191 695 C~1M69 2020 12 09.392510 06 37 20.726 +18 33 29.12 23.3G 03WA191 G37 C~4TxR 2020 12 09.441430 06 37 20.412 +18 33 29.46 03WA191 G37 C~4TxR 2020 12 09.489240 06 37 20.130 +18 33 29.36 03WA191 G37 C~4TxR 2023 02 20.158590 06 48 10.179 +18 28 45.77 22.9G 03WA191 G37 C~6Ekb 2023 02 20.203580 06 48 10.003 +18 28 46.17 03WA191 G37 C~6Ekb
The following table shows the residuals to the orbit fit. The first coumn is the point number. The second column is the time, in years, measured from the first observation. The third and fifth columns are the regularized positions used in the orbit fit. The fourth and sixth columns are the residuals, in arc seconds, for RA and Dec respectively.
1 0.0000 0.00 0.54 0.00 -0.58
2 0.0002 0.00 -0.19 0.00 -0.01
3 0.0003 0.00 -0.18 0.00 0.07
4 0.3090 0.00 -0.15 0.00 -0.06
5 0.3091 0.00 -0.20 0.00 0.04
6 0.9642 0.00 -0.24 0.00 0.20
7 0.9668 0.00 -0.14 0.00 0.02
8 0.9670 0.00 -0.29 0.00 0.12
9 1.0325 0.00 -0.14 0.00 0.16
10 1.0327 0.00 1.51 0.00 -0.80
11 1.9281 0.00 -0.06 0.00 -0.06
12 1.9283 0.00 -0.36 0.00 0.19
13 1.9440 0.00 -0.19 0.00 0.03
14 1.9442 0.00 -0.10 0.00 0.26
15 1.9443 0.00 -0.15 0.00 0.16
16 4.9745 0.00 0.08 0.00 0.09
17 4.9745 0.00 0.12 0.00 0.17
18 4.9745 0.00 0.10 0.00 0.16
19 4.9746 0.00 -0.00 0.00 0.17
20 11.2385 0.00 -0.01 0.00 0.01
21 11.2386 0.00 -0.05 0.00 -0.00
22 11.2388 0.00 -0.21 0.00 -0.12
23 17.0462 0.00 0.00 0.00 -0.16
24 17.0463 0.00 -0.22 0.00 0.06
25 17.0465 0.00 -0.07 0.00 -0.15
26 19.2441 0.00 0.21 0.00 0.11
27 19.2442 0.00 0.11 0.00 -0.00
The following table comes from a 10My integration of the orbit of the object. Three columns are shown. The first column is the result of integrating the nominal orbit. The other two columns are based on clones of the nominal orbit that are +/- 3 sigma from the nominal orbit. If all three types agree then the classificiation is deemed secure. The basis for these calculations is described in more detail in AJ, 129, 1117 (2005). Any use made of these calculations should refer to and credit this publication and the Deep Ecliptic Survey Team.
03WA191 quality flag:3 Type: 3:2E 3:2E 3:2E axisobj 39.752 39.752 39.752 ecceobj 0.243 0.243 0.243 incobj 4.512 4.512 4.512 qmin 29.750 29.750 29.750 qmax 49.683 49.684 49.683 amean 39.455 39.455 39.455 amin 39.057 39.056 39.057 amax 39.936 39.935 39.936 emean 0.220 0.220 0.220 emin 0.197 0.197 0.197 emax 0.245 0.245 0.245 imean 5.633 5.633 5.633 imin 4.104 4.104 4.104 imax 6.949 6.949 6.949 excite_mean 0.242 0.242 0.242 fracstop 1.000 1.000 1.000 cjmean 2.985 2.985 2.985 libcent 0 179.4 179.4 179.4 libamp 0 60.6 60.5 60.6 libcent 1 -180.0 -180.0 -180.0 libamp 1 -180.0 -180.0 -180.0 libcent 2 -180.0 -180.0 -180.0 libamp 2 -180.0 -180.0 -180.0 libcent 3 -180.0 -180.0 -180.0 libamp 3 -180.0 -180.0 -180.0 libcent 4 -180.0 -180.0 -180.0 libamp 4 -180.0 -180.0 -180.0 kozaimean 156.3 156.3 156.3 kozaiamp 179.9 179.9 179.9